Malicious PDF — malware analysis report

Static analysis result for SHA-256 5027c6b5af0c5b54…

MALICIOUS

PDF

44.4 KB Created: 2021-05-14 08:12:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 5b5cc8b1152469007f730916186e93b0 SHA-1: 8923757e5eb5beaa3a2891711e46a46e02499711 SHA-256: 5027c6b5af0c5b544fadd166473be3e9063d942ccef2d6985be265b1dc3c7cc2
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/406889139/coin-master-mod-game-hack PDF link annotation
    • http://julo-it.net/images/get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/do-coin-master-hacks-work_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://julo-it.net/images/roblox-army-robux_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://julo-it.net/images/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • http://julo-it.net/images/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/how-to-hack-coin-master-spin-ios_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/password-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/coin-master-game-hack-app_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/blox-best-robux_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/are-robux-generators-safe_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/coin-master-gift-link_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/coin-master-reward-link-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047ef.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47EF 25724 bytes
SHA-256: 78a55b1c99f07abb428803e467ddd1944ac94f55f19d149117905c616660e0e7
font_01_sfnt_off000082d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82D4 2824 bytes
SHA-256: 381f6d859be141449dd645f7be1484d2a1cf49218dc471b402dae69eaa2b11d5
font_02_sfnt_off00008c77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C77 17720 bytes
SHA-256: e3dc30cd69473f08b9483bb660e9aeaccc8f6f74c3e4f353697525059d592d8d

Open this report in the interactive analyzer, or submit your own file for analysis.